Re: AHCI support on Intel chipsets (confusion?)

[Wayne Sherman <Wayne@SystemDesignWorks.com>]

Leon,

  Thanks for the reply.  I have enabled SATA Enhanced mode, but still 
did not see any mention of AHCI in my dmesg output.  I also did not find 
a setting for AHCI in the BIOS.  My board is a Gigabyte:

http://www.gigabyte.com.tw/Products/Motherboard/Products_Spec.aspx?&ProductID=2304

   I was about to email GigaByte and ask them about AHCI, but I decided 
to do a search first.  That is when I found the Intel page that says 
ICH7 does not support AHCI.  If that is so, then I need a different 
motherboard.  Can you confirm that ICH7 does not support AHCI?

Thanks,

Wayne


Leon Woestenberg wrote:
> Wayne,
> 
> On 12/2/06, Wayne Sherman <Wayne@systemdesignworks.com> wrote:
>> Jeff Garzik,
>> ...
>> my decision on the kernel source code.  It seems to indicate the Intel
>> ICH7 is AHCI compatible:
>>
> We (yesterday) found out that our board (a Supermicro PDSMI+, ICH7 as
> well) needs the proper BIOS setting in order for it to appear as a
> AHCI capable controller.
> 
> Precisely, we found if we enabled "SATA Enhanced Mode", then enabled
> "AHCI" in the BIOS, the chipset identifies itself as a 0x27c1 device
> rather than a 0x27c0 device.
> 
> This is probably exactly the issue you ran into. Try your BIOS settings.
> 
> Regards,
> 
> Leon Woestenberg.
>